DIY 2010 New England

Canton, Massachusetts

October 23, 2010

Updated October 18th

DIY 2010 will, as usual now, not be a competition. I prefer to keep the focus on listening to whatever anyone may wish to bring and allow for feedback if desired.

Who's Bringing What

I added this section because some folks tell me what they expect or have in mind to bring. I've heard from a few as to what they're bringing and I'll update this a bit later if I get much detail.

. I have some idea of who's bringing what. Here's what I've been told may be there in no particular order.

I have some systems on-hand to show if there is interest. I'm running most of my systems using SoundEasy, so there will be no crossovers to disconnect/connect, just a PC on the side. That is used for my dipole listed above as well.

Auditioning Equipment

This year will be like last year's event with the equipment noted below. There will, however be one additional item that I'll add to the list later.


Before I go any further let me say BRING YOUR CDs!!! The crowd determines what is played and when, but please bring any CDs that would like. There's no guarantee of getting a lot of time on anything, but everyone is encouraged to request their preference during the day. At times the same passages are played for sake of comparison, but I'd like to have more variety of music to keep things from getting stale.

My equipment will be:

Anyone coming to the NE event who has any component which they would like to bring is certainly welcome and encouraged.

Measurement Systems

There is usually little time to measure upstairs due to the auditioning and limited space. My basement is my work area, so most measurements will be taken there. LAUD v3.0 will be available for systems that can be moved there. This will leave the living room primarily for listening sessions, but if it's not prudent to haul a system downstairs, we may try to measure upstairs when things slow down.

I have a small number of baffle inserts for my large (now 2m x 2m) baffle for testing raw drivers. If I happen to have the size needed, raw drivers may be measured if anyone requests it.

Again This Year

SoundEasy has a lot of functionality. I've previously been using its Digital Equalizer/Digital Filter (DE/DF) capabilities with each crossover and am now using the v17 introduction of the Ultimate Equalizer. It's really convenient to audition a design without ever building a physical crossover. It's even easier to "design" a crossover by making SPL measurements (impedance not needed), selecting the Fc and slope for each section, then runing it. As simple as that. There are other considerations, of course, but those are the basics. I still like to offset drivers to prevent the need for excessive time delays that impact the off-axis. Diffraction control also helps in the same way that it does for passive crossovers, but it's once drivers are mounted on baffles, the process is quick. So many combinations can be tested so quickly.

Soundeasy will also be available downstairs for demonstrations.

NEW: Bodzio Software Ultimate Equalizer

Bodzio Software just released the Ultimate Equalizer. Rather than me try to give a brief description, here's a link to the post by Bohdan at Parts Express. John K will be giving a demonstration of its use. I'll be showing my new dipole effort using it. I've used measurments I took with LAUD. John will show the full potential of the UE.

NEW: Snacks and Lunch

I provide some finger food and snacks to carry us through to lunch, but if you have an idea of something better than chips, bagels and veggies with dip, feel free to add to it. Maybe you want something sugar-free or low sodium, etc. There's always quite a bit left over in any case, so don't go overboard. Don't feel like you have to bring something either, in the end there's usually way more than we can eat.

We typically order out for lunch, most often for delivery pizzas, and everyone chips in. This usually works for everyone, but there are options if anyone wishes to make the trip to the end of my street to one of several restaurants. There's Japanese, Thai, Vietnamese and a new place called "The Chubby Chick Pea" that is quick and serves shawarma and falafel wraps. They are all less than a mile away.


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